—­ poplar,
Soft maple,
—­ pines,
“Softwoods” or conifers,
Soil erosion, forests prevent,
—­, influence of, on trees,
—­ of wooded areas, preserving,
—­, physical character of, important for production of trees,
Soulange’s magnolia,
Specifications for street tree,
Specimens of wood, how to identify,
Split trees,
Spray trees, how to,
Spraying apparatus,
—­ foliage,
—­ for caterpillars,
—­ for fungous diseases,
—­ material,
  arsenate of lead,
  kerosene emulsion,
  lime-sulfur wash,
  tobacco water,
  whale-oil soap,
—­ trees, seasons for,
—­ trees, thoroughness essential,
Spruce and hemlock, description of,
—­, black,
—­, blue,
—­, Oriental,
—­, Norway,
—­, white,
Spruces,
Star-shaped leaves,
Stem,
Stomata,
Streets, trees for,
Structure of trees,
—­ of woods,
Sucking insects,
Sugarberry,
Sugar maple,
—­ maple borer,
Suggestions for forming tree clubs,
—­ for outdoor study of trees,
—­ for planting little trees,
—­ for safety of tree climbers,
—­ for tree nursery,
Surface wounds,
Swamp maple,
—­ white oak,
Sweet birch,
—­ gum,
Sycamore,
—­ maple,
—­ tree,

Tamarack,
Taxation, forest lands exempt from,
Taxodium distichum,
Taxus baccata,
Thuja occidentalis,
Tilia americana,
—­ microphylla,
Tobacco water,
Tools used in pruning,
Toxylon pomiferum,
Training a child to recognize trees,
—­ children in observation and precision,
Trametes pini,
Treating surface wounds,
Tree, ailing, how to tell an,
—­ and nature study, value of,
—­, beech,
—­, birch,
—­, blue beech,
—­ climbers, suggestions for safety of,
—­ clubs, suggestions for forming,
—­, coffee,
—­ diseases,
—­ diseases, effects of, as destroyers and up-builders,
—­ growth, conditions for, in different localities,
—­, hackberry,
—­, iron wood,
—­, nettle,
—­ nursery, suggestions for,
—­, plane,
—­ repair,
—­, sycamore,
—­, tulip,
—­, weeping willow,
Trees and character building,
—­, care of,
—­, care to be exercised in location of,
—­, civic lessons reflected in,
—­, community life of,
—­, coniferous,
—­, crowding,
—­, deciduous,
—­, effect of frost on,
—­, effect of heat on,
—­, enemies of,
—­ for lawns,
—­ for screening,
—­ for streets,
—­ for woodland,
—­, general observations about,
—­, hickories, walnut, and butternut,
—­, how to identify,
—­, how to mark for removal,
—­, how to plant,
—­, how to spray,
—­, improperly pruned,
—­, individuality of
—­, influence of light on,
—­, influence of moisture on,
—­, influence of soil on,
—­, insects injurious to,
—­, measuring diameter of,
—­, methods of planting little,
—­, methods of removing,